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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
This module provides support for Twisted to interact with the glib
mainloop via GObject Introspection.
In order to use this support, simply do the following::
from twisted.internet import gireactor
gireactor.install()
Then use twisted.internet APIs as usual. The other methods here are not
intended to be called directly.
"""
import sys
if 'gobject' in sys.modules:
raise ImportError(
"Introspected and static glib/gtk bindings must not be mixed; can't "
"import gireactor since pygtk2 module is already imported.")
from gi.repository import GLib
GLib.threads_init()
from twisted.internet import _glibbase
from twisted.python import runtime
# We need to override sys.modules with these to prevent imports.
# This is required, as importing these can result in SEGFAULTs.
sys.modules['glib'] = None
sys.modules['gobject'] = None
sys.modules['gio'] = None
sys.modules['gtk'] = None
class GIReactor(_glibbase.GlibReactorBase):
"""
GObject-introspection event loop reactor.
"""
_POLL_DISCONNECTED = (GLib.IOCondition.HUP | GLib.IOCondition.ERR |
GLib.IOCondition.NVAL)
_POLL_IN = GLib.IOCondition.IN
_POLL_OUT = GLib.IOCondition.OUT
# glib's iochannel sources won't tell us about any events that we haven't
# asked for, even if those events aren't sensible inputs to the poll()
# call.
INFLAGS = _POLL_IN | _POLL_DISCONNECTED
OUTFLAGS = _POLL_OUT | _POLL_DISCONNECTED
def __init__(self, useGtk=False):
_gtk = None
if useGtk is True:
from gi.repository import Gtk as _gtk
_glibbase.GlibReactorBase.__init__(self, GLib, _gtk, useGtk=useGtk)
class PortableGIReactor(_glibbase.PortableGlibReactorBase):
"""
Portable GObject Introspection event loop reactor.
"""
def __init__(self, useGtk=False):
_gtk = None
if useGtk is True:
from gi.repository import Gtk as _gtk
_glibbase.PortableGlibReactorBase.__init__(self, GLib, _gtk,
useGtk=useGtk)
def install(useGtk=False):
"""
Configure the twisted mainloop to be run inside the glib mainloop.
@param useGtk: should GTK+ rather than glib event loop be
used (this will be slightly slower but does support GUI).
"""
if runtime.platform.getType() == 'posix':
reactor = GIReactor(useGtk=useGtk)
else:
reactor = PortableGIReactor(useGtk=useGtk)
from twisted.internet.main import installReactor
installReactor(reactor)
return reactor
__all__ = ['install']